Circular-knitting machine



(No Model.)

H. A. HOUSEMAN. A

CIRCULAR KNITTING MACHINE.

No. 489,957. Patented Jan. 1'7,4 1893.

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STATES PATENT OFFICE.

HARRY A. I-IOUSEMAN, OF PHILADELPHIA, PENNSYLVANIA.

CIRCULAR-KNITTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 489,957, dated January1'?, 1893.

Application tiled .Tune 25, 1892. Serial No. Z37,988. (No model.)

To a/ZZ whom it may concern:

Be it known that I, HARRY A. HoUsEMAN, a citizen of the United States,residing at Philadelphia, county of Philadelphia, and State ofPennsylvania, have invented a new and useful Improvement inCircular-Knitting Machines, of which the following is a full, clear, andexact description, reference being had to the accompanying drawings,which form a part of this specification.

My invention consists in certain improvements in mechanism connectedwith circular knitting machines in which the needle cylin der is raisedand depressed automatically to make a longer stitch when it is elevated.

As the mechanism for operating the cam cylinder and the operation of theneedles form no part of this invention, I have not illustrated the same.

In the drawings-Figure l is a sectional view of portion of a knittingmachine, on line hrz-oo Fig. 2. Fig. 2 is a side elevation of part ofthe needle cylinder with the elevating device. Fig. 3 is a plan View ofthe sector used in the needle cylinder elevating device. Fig. 4f is aView of a stocking showing a tube of varying diameters.

A is the needle cylinder in guides a mand in slots a in said cylinderare the needles B.

C is a rod threaded at its lower end, and the upper end of which passesthrough the needle cylinder and is tixedly secured thereto.

D is a lever having the nuts cZ CZ which may be secured on. the threadedend of rod C at the points desired. This lever D is pivoted to bracketEsupported from the frame of the machine. The end of this lever Dis bentupward and provided with a roller @Z2v which rests in a cam slotfin theframe F. This frame F rests in grooves f2 in the plate G which plate issecured to the bed of the machine. Connected to frame F is the rod IIsecured at its other end to a slot in the arm h keyed to the toothsector I, said sector being pivotally connected atc' to the frame of themachine.

J is a weight secured by the cord or wire j Lis a sprocket wheel on theshaft Z. 0n

the same shaft I is the worm wheel M Working in the Worm m on the shaftm.

M2 are operating pulleys.

Upon the sprocket Wheel L is the sprocket chain L having at properplaces the projecting lugs Z and side lug Z2. The teeth of sector I arein line of movement of lugs Z and pin 7o in line of movement of side lugZ2.4 The sprocket wheel L is revolved, and to cause it to revolveconnection may be made by any desired mechanism with the drivingmechanism, the lugs Z being set at any point where it is desired tofashion or make a tube larger than the main size of the tube, and thelug Z2 at the position where it is desired to cease knitting this largetube and return to the regular size. When the lugs Z strike the teeth ofthe sector they cause the sector to move which moves the rod II to theleft and with it the frame, causing the roller Z2 on the lever D to movedownward, depressing the portion of the lever D to the left of the pivotpoint and raising that portion to the right of said pivot point, which.through the medium of rod C elevates the needle cylinder gradually andmakes the stitches larger to the extent of this elevation, and thus theextent of increase of the size of the stitches and the size of the tubemay be governed by the point where the lever D is secured to the rod C.The movement of the sector I moves the pawl on its pivot point by thepin k2 striking it, and said sector passes beyond it until the pin 7a2passes beyond the point of the pawl when the said pawl drops down andsaid pawl having but one direction of movement prevents the return ofthe sector. Vhen the lug Z2 arrives at the position of the pawl itstrikes the pin lo elevating the pawl and the Weight .I returns thesector, forcing the roller CZ up the incline and bringing the needlecylinder down ICO amount has been made the cylinder is automaticallyreturned to its normal position thus returning the size of stitch andtube to the normal.

I-Iaving now fully described my invention, what I claim and desire toprotect by Letters Patent, is

l. In a circular knitting machine, in combination, a needle cylindersecured so as to be adapted to have a vertical movement, a rod, securedto said cylinder, a pivoted lever connected to said rod,a sprocketwheel, a pattern chain, lugs upon said pattern chain at prearrangedpositions and intermediate connection between said lugs and said lever.

2. In a circular knitting machine, in combination, a needle cylindersecured so as to be adapted to have a vertical movement, a rod securedto said cylinder, a pivoted lever adjustably connected to said rod, asprocket wheel, a pattern chain, lugs upon said pattern chain atprearranged positions, and intermediate connection between said lugs andsaid lever.

3. In a circular knitting machine, in combination, a needle cylindersecured so as to be adapted to have a vertical movement, a rod securedto said cylinder, a pivoted lever connected to said rod, a rollermounted on the end of said lever, a frame provided with a cam slot inwhich said roller rests, said frame being adapted to s1ide,a sprocketwheel, a pattern chain on said wheel, lugs upon said pattern chain atpre-arranged positions, and intermediate connection between said lugsand the frame.

4. In a circular knitting machine, in combination, a needle cylindersecured so as to be adapted to have a vertical movement, a rod securedto said cylinder, a sprocket wheel, a pattern chain upon said wheel,lugs at prearranged positions upon said pattern chain, a toothed sector,the teeth of which are in line of movement of said lugs, andintermediate connection betweenV said sector and said rod.

5. In a circular knitting machine, in combination, a needle cylindersecured so as to be adapted to have a vertical movement, a rod securedto said cylinder, a pivoted lever connected to said rod, a sprocketWheel,a pattern chain upon said Wheel, lugs at pre-arranged positionsupon said pattern chain, a toothed sector, the teeth of which are inline of movement of said lugs and intermediate connection between saidsector and said lever.

6. In a circular knitting machine, in combination, a needle cylindersecured so as to be adapted to have a vertical movement, a rod securedto said cylinder, a pivoted lever connected to said rod,a roller mountedon the end of said lever, a frame provided with a cam slot in which saidroller rests, said frame being adapted to slide, a sprocket Wheel, apattern chain upon said wheel, lugs at prearranged positions upon saidpattern chain, a toothed sector the teeth of which are in line ofmovement of said lugs, and intermediate connection between said sectorand said frame.

7. In a circular knitting machine, in combination, a needle cylindersecured so as to be adapted to have a vertical movement, a rod securedto said cylinder, a sprocket Wheel, a pattern chain upon said wheel,lugs at prearranged positions upon said pattern chain, a toothed sector,means for exerting a down- Ward pressure upon said sector, a pivotedpaWl, a pin upon said pawl adapted to be engaged by a lug upon saidchain, the teeth of said sector being in line of movement with lugs onthe pattern chain, a pin upon the sector, the pawl being in line ofmovement of said pin,and intermediate connection between said sector androd.

8. In a circular knitting machine, in combination, a needle cylindersecured so as to be adapted to have a vertical movement, a rod securedto said cylinder, a pivoted lever connected to said rod, a sprocketwheel, a pattern chain upon said wheel, lugs at pre-arranged positionsupon said pattern chain, a toothed sector, means for exerting a downwardpressure upon said sector, a pivoted pawl, a pin upon said pawl adaptedto be engaged by a lug upon said chain, the teeth of said sector beingin line of movement with the lugs on the pattern chain, a pin upon thesector, the pawl being in line of movement of said pin, and intermediateconnection between said sector and said lever.

9. In a circular knitting machine, in combination, a needle cylindersecured so as to be adapted to have a vertical movement, a rod securedto said cylinder, a pivoted lever connected to said rod, a rollermounted on the end of said lever, a frame provided with a cam slot inwhich said roller rests, said frame being adapted to slide, a sprocketwheel, a pattern chain upon said wheel, lugs at prearranged positionsupon said pattern chain, a toothed sector, means for exerting a downwardpressure upon said sector, a pivoted pawl, a pin upon said pawl adaptedto be engaged by a lug upon said chain, the teeth of said sector beingin line of movement with the lugs on the pattern chain, a pin upon thesector, the pawl being in line of movement of said pin, and intermediateconnection between said sector and said frame.

In testimony ot' which invention I have hereunto set my hand.

HARRY A. HOUSEMAN.

Witnesses:

JOHN SHALLcRoss, WM. E. DUDLEY.

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